peewee101: SipX is a modular SIP proxy server that claims to be very stable, scalable, and reliable.
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Yeah, all the features are good, but how does it handle sip tunk connectivity? Thats my question. Does the RTP stream flow between your internal sip endpoints and the service provider's media server? In the case of a SIP trunk delivered over a private vlan or vpn its not usually something you would route on your LAN. In the Asterisk environment the RTP streams are between sip endpoints and the Asterisk server, then seperate RTP Streams from the Asterisk server to the Service providers SIP Media server. This eliminates the need to route between the LAN and private voice v-lan.